account

What is an online account? It's when you sign up with a cable company or Internet Service Provider (ISP) and pay a monthly fee, you establish an "account" and receive a username and a password. This allows you to access the Internet and your email account. 

You also create accounts when you sign up on e-commerce websites and social media sites. For email, you likely have a local account (even if it's at school or work) and a Webmail account.

Account is a common term, and the reality is that you have hundreds of online accounts. But free user be warned, these services harvest your account data so you must take active measures if you want to keep your privacy protected.